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Cryo-EM Structures of Full-Length Integrin alphaIIbbeta3 in Native Lipids Complexed with Tirofiban
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 8T2U
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 7.273 f_angle_d 0.419 f_chiral_restr 0.046 f_plane_restr 0.003 f_bond_d 0.002
Sample full-length integrin alphaIIbbeta3
Specimen Preparation Sample Aggregation State CELL Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 97969 Reported Resolution (Å) 3.9 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (8T2U) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 (6k x 4k) Electron Dose (electrons/Å**2) 50
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 2500 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 0.27 Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 81000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.2.1 CTF CORRECTION cryoSPARC 4.2.1 MODEL FITTING PHENIX 1.20.1 MODEL FITTING UCSF Chimera 1.15 CLASSIFICATION cryoSPARC 4.2.1 RECONSTRUCTION cryoSPARC 4.2.1 MODEL REFINEMENT PHENIX 1.20.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 4245069